HCatalog has same datatypes as Hive. We can create tables in HCatalog to store data. These tables can be placed in a Database.
We can also partition HCatalog tables based on a Hash. There are multiple dimensions in a HCatalog partition.
There are records in a partition. Once a partition is created, we
cannot add or remove records into it.
Records are divided into columns. Each column has a name and a datatype.
Overall, HCatalog data model is similar to Relational Data Model.